Napco SLe-SMTCHG Optional, Smart Charge Module required for installations where the control panel cannot provide the 65mA of Auxiliary power

Napco SLe-SMTCHG Optional, Smart Charge Module required for installations where the control panel cannot provide the 65mA of Auxiliary power required to operate the SLE-GSM radio. Allows use of standard 4AH,12V rechargeable battery to provide radio standby power.